Thermodynamic and kinetic studies for synthesis of the acetal (1,1-diethoxybutane) catalyzed by Amberlyst 47 ion-exchange resin

• Tipo: Artigo em Revista Científica Internacional
• Data: 2015

Autores

Mehabub Rahaman (Autor) Outra; Nuno S. Graça (Autor) FEUP; Carla S. M. Pereira (Autor) FEUP; Alírio E. Rodrigues (Autor) FEUP

Revista

Título: Chemical Engineering Journal

Vol. 264

Páginas: 258-267

ISSN: 1385-8947

Editora: Elsevier

Indexação

ISI Web of Knowledge - 2 Citações

Scopus - 2 Citações

INSPEC

Projetos Associados

LA 20 - PROJECTO ESTRATÉGICO - LA 20 - 2013-2014

LA 20 - Projeto Estratégico-LA 20 - 2011-2012

Outras Informações

ID Authenticus: P-00A-20G

DOI: 10.1016/j.cej.2014.11.077

Abstract (EN): The synthesis of 1,1-diethoxybutane was carried out in a batch reactor from a liquid phase reaction between ethanol and butyraldehyde using Amberlyst 47 as the solid acid catalyst to obtain thermodynamic, kinetic and adsorption parameters. The reaction equilibrium constant was experimentally determined in the temperature range 293.15-323.15 K. The standard properties of the reaction at 298.15 K were also estimated. The effects of temperature, molar ratio of ethanol to butyraldehyde, stirrer speed, and catalyst loading on the reaction rate were investigated. Kinetic experiments were performed in the same temperature range at 6 bar. A two-parameter kinetic law based on a Langmuir-Hinshel-wood -Hougen-Watson rate expression, using activity coefficients from the UNIFAC method, was used to predict the experimental data of the heterogeneous liquid-phase reaction. The kinetic parameters were determined based on the kinetic model. The model predicts the kinetic data very well and it will be useful for design and optimization of integrated reaction separation processes.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 10